CN105466355A - Portable outline detection device for train wheel tread - Google Patents

Portable outline detection device for train wheel tread Download PDF

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Publication number
CN105466355A
CN105466355A CN201510975299.7A CN201510975299A CN105466355A CN 105466355 A CN105466355 A CN 105466355A CN 201510975299 A CN201510975299 A CN 201510975299A CN 105466355 A CN105466355 A CN 105466355A
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China
Prior art keywords
nut
sensor
measurement
wheel
tread
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CN201510975299.7A
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CN105466355B (en
Inventor
张凤生
孙中义
沈辉
刘智超
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Qingdao University
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Qingdao University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical techniques
    • G01B11/24Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention discloses a portable detection device used for measurement of a train wheel tread outline. Through application of the device disclosed by the invention, the high-precision quick measurement of wheel tread wear can be completed. The portable detection device disclosed by the invention is realized by the technical scheme that a stepping motor is used to drive a screw rod and make a nut move along a wheel axis direction; and by a V-shaped spherical guide rail and a profiled motion mechanism, moving of the nut drives a laser displacement sensor to carry out two-dimensional motion in a plane passing a wheel axle, and tracks of the motion copy a standard tread outline of the wheel, so that the tread outline is scanned and measured point by point. The profiled measurement is realized, so that the sensor with a small measurement scope is needed to satisfy measurement requirements for the whole tread outline. Measurement accuracy and resolution are higher. Outline dimensions of an instrument are smaller. The sensor is installed and designed in an inclined manner, so that the problem that the measurement accuracy is reduced or even the measurement cannot be realized thanks to an oversized included angle between a measurement light beam and a normal line of a measured point at a place with a large rate of curve of the tread outline is solved.

Description

Portable train wheel tread contour detecting device
Technical field
The present invention relates to a kind of mancarried device for train wheel tread contour detecting, can Quick Test Vehicle wheel tread wear condition, to adapt to the needs of Development of High Speed Railway to wheel tread detecting instrument.
Background technology
Along with the development of high-speed railway, train speed increases substantially, unexpected acceleration, deceleration, the operation such as brake hard is more and more frequent, cause the increased wear between wheel and rail, therefore need to carry out regular detection to wheel tread abrasion condition, therefore, very urgent to the demand of the high wheel tread detecting instrument of miniaturization, intellectuality, accuracy of detection and detection efficiency.
At present, wheel tread wear detecting method mainly contains two classes: one is use contact measurement instrument hand dipping, and detection efficiency is low, error is larger.Two is non-cpntact measurement (optical scanning and optical imagery) methods, measures efficiency high, can realize automatic detection.Wherein, the measuring method of laser displacement sensor is adopted to have the potential of miniaturization, intellectuality, raising measuring accuracy and efficiency most.But in existing surveying instrument, laser displacement sensor is with rectilinear motion metering system, the sensor that effective range is large must be adopted, cause Measurement Resolution low (Measurement Resolution of laser displacement sensor reduces along with the increase of its measurement range).And, the mounting means of sensor makes the outgoing beam of sensor perpendicular to the axis (namely perpendicular to the measurement direction of motion of sensor) of tested wheel, cause in the large place of tread contour curve slope, angle between measuring beam and measured point normal is excessive, the hot spot that measuring beam projects measured surface seriously scatters, cause measuring accuracy significantly to reduce, even occur measuring distortion.The present invention is intended to solve the problem, and manufactures and designs the wheel tread detecting instrument of Portable intelligent.
Summary of the invention
The invention provides a kind of portable train wheel tread pick-up unit design proposal.Silk-line fabric technology combines with laser displacement sensor by the program, has both reduced the requirement to sensor measurement scope, solves again the problem in the low even distortion of the local measuring accuracy that wheel tread contour curve slope is large.
The technical scheme that the present invention takes is:
A kind of portable train wheel tread contour detecting device, mainly comprises laser displacement sensor and erecting frame, stepper motor and controller thereof, ball guide screw nat, the forming movement mechanism of profiling wheel standards tread profile, V-type spherical guide, single-chip microcomputer and Survey control and display; It is characterized in that: driving stepper motor ball-screw, nut moving linearly; Power is passed to sensor mount by the V-type spherical guide that moves through of nut, erecting frame is under the effect of forming movement mechanism, while nut motion, can move along the direction of moving perpendicular to nut, make the movement locus profiling wheel standards tread profile of the sensor be mounted thereon; Single-chip microcomputer pick-up transducers outputs signal, and obtains tread profile measurements through data processing.
Further, forming movement mechanism is wherein made up of standard tread profile tracer guide rail, V-type spherical guide, sensor mount and bearing; It is characterized in that: between the slide block that V-type spherical guide is installed on and nut is fixed together and sensor mount, by power transmission to sensor mount; Two bearings being packed in erecting frame both sides roll along profiling guide rail, realize the silk-line fabric motion of sensor.
Further, laser displacement sensor wherein and nut direction of motion inclination certain angle α install, and make the outgoing beam oblique incidence of sensor to measured surface.
Further, wherein motion drive part is made up of composite stepper motor, shaft coupling, ball-screw, nut, slide block, bearing seat, restraint guide rod; It is characterized in that: shaft coupling meets zero back clearance; Unthreaded hole on restraint guide rod and slide block is slidably matched, and restriction nut can only move linearly.
Further, wherein the installation of forming movement mechanism, motion driving mechanism based on column plate; Column plate side is fixed with one block of flat magnet, to suck in wheel side-locating face as horizontal survey reference field during measurement; Column plate side is also fixed with two positioning cylinders, during measurement and wheel rim be close to, do vertical direction location.
Further, wherein profiling rail sections is made up of two identical guide rails; It is characterized in that: two profiling guide rails are used as the major support members of apparatus structure simultaneously, reduce physical dimension and weight.
(1) forming movement mechanism is made up of slide block, V-type spherical guide, sensor mount, bearing and the tread profile tracer guide rail be connected with nut.V-type spherical guide is installed between slide block and sensor mount, by power transmission to sensor mount; Two bearings being packed in erecting frame both sides roll along profiling guide rail, realize the forming movement of erecting frame, the very little sensor of effective range only need be adopted can to realize gamut and measure.
(2) laser displacement sensor and nut direction of motion (tested vechicle wheel axis direction) inclination certain angle α install, make the outgoing beam oblique incidence of sensor to measured surface, to solve in the large place of tread contour curve slope, measuring accuracy reduces, the problem even cannot measured.
(3) motion drive part is made up of composite stepper motor, shaft coupling, ball-screw, nut, slide block, bearing seat, restraint guide rod; Shaft coupling meets zero back clearance, and the unthreaded hole on restraint guide rod and slide block is slidably matched, and restriction nut can only move linearly.
(4) for guaranteeing that apparatus structure is compact and globality strong, the installation of forming movement mechanism and motion driving mechanism is based on column plate; Profiling rail sections is made up of two identical guide rails, and these two profiling guide rails are used as the major support members of this apparatus structure simultaneously, reduces physical dimension and weight.
(5) column plate side is fixed with one block of flat magnet, to suck in wheel side-locating face as horizontal survey reference field during measurement; Column plate side is also fixed with two positioning cylinders, during measurement and wheel rim be close to, do vertical direction location.This structural design makes apparatus structure compact, and globality is strong.
(6) adopt embedded design, outputed signal by single-chip microcomputer pick-up transducers, obtain tread profile measurements through data processing, and display translation or storage.
Beneficial effect of the present invention:
(1) due to the measurement movement locus profiling wheel standards tread profile of laser displacement sensor, therefore, only effective range little (± 5mm) sensor need be adopted can to realize the detection of whole wheel tread profile, not only measuring accuracy and resolution improve, and structure of the detecting device is compacter, light, portable.
(2) take laser displacement sensor and nut direction of motion (tested vechicle wheel axis direction) inclination certain angle α to install, solve in the large place of tread contour curve slope, occur incident beam and measured point normal angle excessive, the hot spot causing incident beam to project measured surface seriously scatters, measuring accuracy is caused to reduce, the problem even cannot measured.
(3) friction force adopting V-type spherical guide can reduce to greatest extent to produce in forming movement process, on the impact of screw nut driven, is moved light.
(4) adopt ball-screw nut transmission, not only can reduce leading screw wearing and tearing, and required driving torque is little, and micro-step motor can be selected to drive, reduces device overall dimensions.
(5) the structural design globality of device is strong, and compact in design, can reduce device overall dimensions and weight.
Accompanying drawing illustrates:
Fig. 1 is one-piece construction front view of the present invention;
Fig. 2 is the A-A cross-sectional view in Fig. 1;
Fig. 3 is one-piece construction vertical view of the present invention;
Fig. 4 is the B-B cross-sectional view in Fig. 2.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
As shown in Figures 1 to 4, stepper motor 1 is installed on supporting seat 2, drives leading screw 4 by shaft coupling 3; Nut 5 and slide block 6 are fixed together, and the unthreaded hole on slide block 6 and restraint guide rod 7 are slidably matched, and limiting nut can only moving linearly; V-type spherical guide 9 and 10 is housed between the both sides of slide block 6 and the left and right pillar medial surface of sensor mount 8, erecting frame 8 can be moved up and down; The left and right pillar lateral surface of erecting frame 8 is equipped with bearing 11 and 12 respectively; Two bearings roll along profiling guide rail 13 and 14 respectively.When slide block 6 (being fixed together with nut 5) moving linearly, by V-type spherical guide 9 and 10, power is passed to sensor mount 8, two bearings is rolled along profiling guide rail 13 and 14 respectively, thus make erecting frame 8 while with slide block moving linearly, move along the direction of moving perpendicular to nut again, realize the profiling to wheel standards tread profile.
The installation of forming movement mechanism, motion driving mechanism is based on column plate 15.Column plate side is fixed with one block of flat magnet 16, to suck in wheel side-locating face as horizontal survey reference field during measurement; Two positioning cylinders 17 and 18 are also fixed in column plate side, during measurement and wheel rim be close to, do vertical direction location.Motor supporting base 2 is connected with column plate; Two profiling guide rails are connected with column plate symmetrically, as the major support members of apparatus structure, make compact conformation, lightly, globality is strong.Laser displacement sensor 19 is arranged on sensor bracket 20, and bracket 20 is fixed on sensor mount 8 again.

Claims (6)

1. a portable train wheel tread contour detecting device, mainly comprises laser displacement sensor and erecting frame, stepper motor and controller thereof, ball guide screw nat, the forming movement mechanism of profiling wheel standards tread profile, V-type spherical guide, single-chip microcomputer and Survey control and display; It is characterized in that: driving stepper motor ball-screw, nut moving linearly; Power is passed to sensor mount by the V-type spherical guide that moves through of nut, erecting frame is under the effect of forming movement mechanism, while nut motion, can move along the direction of moving perpendicular to nut, make the movement locus profiling wheel standards tread profile of the sensor be mounted thereon; Single-chip microcomputer pick-up transducers outputs signal, and obtains tread profile measurements through data processing.
2. portable train wheel tread contour detecting device according to claim 1, forming movement mechanism is wherein made up of standard tread profile tracer guide rail, V-type spherical guide, sensor mount and bearing; It is characterized in that: between the slide block that V-type spherical guide is installed on and nut is fixed together and sensor mount, by power transmission to sensor mount; Two bearings being packed in erecting frame both sides roll along profiling guide rail, realize the silk-line fabric motion of sensor.
3. portable train wheel tread contour detecting device according to claim 1, laser displacement sensor wherein and nut direction of motion inclination certain angle α install, and make the outgoing beam oblique incidence of sensor to measured surface.
4. portable train wheel tread contour detecting device according to claim 1, wherein motion drive part is made up of composite stepper motor, shaft coupling, ball-screw, nut, slide block, bearing seat, restraint guide rod; It is characterized in that: shaft coupling meets zero back clearance; Unthreaded hole on restraint guide rod and slide block is slidably matched, and restriction nut can only move linearly.
5. portable train wheel tread contour detecting device according to claim 1, wherein the installation of forming movement mechanism, motion driving mechanism is based on column plate; Column plate side is fixed with one block of flat magnet, to suck in wheel side-locating face as horizontal survey reference field during measurement; Column plate side is also fixed with two positioning cylinders, during measurement and wheel rim be close to, do vertical direction location.
6. portable train wheel tread contour detecting device according to claim 1, wherein profiling rail sections is made up of two identical guide rails; It is characterized in that: two profiling guide rails are used as the major support members of apparatus structure simultaneously, reduce physical dimension and weight.
CN201510975299.7A 2015-12-23 2015-12-23 Portable train wheel tread contour detecting device Expired - Fee Related CN105466355B (en)

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN106501280A (en) * 2016-12-05 2017-03-15 南京工程学院 Fan blade on-line measuring device and detection method thereof based on laser ranging
CN108050977A (en) * 2017-12-29 2018-05-18 西南交通大学 A kind of portable railway wheel tread out-of-roundness instrument for quick measuring
CN109000565A (en) * 2018-04-28 2018-12-14 中兴通讯股份有限公司 A kind of measurement method, device and terminal
CN109443208A (en) * 2018-11-29 2019-03-08 赵若群 A kind of railway vehicle wheel cake parameter measuring apparatus and data processing method
CN111288922A (en) * 2020-04-01 2020-06-16 西安交通大学 On-machine measurement method for wheel and tread profile of railway vehicle
CN111595260A (en) * 2020-05-25 2020-08-28 马鞍山市雷狮轨道交通装备有限公司 Mobile portable wheel tread circumferential contour measuring device and method
CN112238879A (en) * 2020-10-26 2021-01-19 中国华电科工集团有限公司 Wheel tread measuring device

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CN105043248A (en) * 2015-04-29 2015-11-11 南京理工大学 Device and method for measuring urban rail wheel parameters based on laser displacement sensor
CN205280000U (en) * 2015-12-23 2016-06-01 青岛大学 Portable train tire tread profile detection device

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JP2013164306A (en) * 2012-02-10 2013-08-22 Railway Technical Research Institute Measurement device and reinforcing bar outer peripheral shape measurement method
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106501280A (en) * 2016-12-05 2017-03-15 南京工程学院 Fan blade on-line measuring device and detection method thereof based on laser ranging
CN106501280B (en) * 2016-12-05 2019-10-18 南京工程学院 Fan blade on-line measuring device and its detection method based on laser ranging
CN108050977A (en) * 2017-12-29 2018-05-18 西南交通大学 A kind of portable railway wheel tread out-of-roundness instrument for quick measuring
CN109000565A (en) * 2018-04-28 2018-12-14 中兴通讯股份有限公司 A kind of measurement method, device and terminal
CN109443208A (en) * 2018-11-29 2019-03-08 赵若群 A kind of railway vehicle wheel cake parameter measuring apparatus and data processing method
CN111288922A (en) * 2020-04-01 2020-06-16 西安交通大学 On-machine measurement method for wheel and tread profile of railway vehicle
CN111595260A (en) * 2020-05-25 2020-08-28 马鞍山市雷狮轨道交通装备有限公司 Mobile portable wheel tread circumferential contour measuring device and method
CN111595260B (en) * 2020-05-25 2024-04-30 马鞍山市雷狮轨道交通装备有限公司 Mobile portable wheel tread circumferential profile measuring device and method
CN112238879A (en) * 2020-10-26 2021-01-19 中国华电科工集团有限公司 Wheel tread measuring device

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